JP2932593B2 - Multi-sequence control NC device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multi-sequence control NC device capable of simultaneously executing a plurality of NC machining programs.

[Prior art] Conventionally, when executing a multi-line NC machining program, if it is desired to synchronize between the series, as shown in FIG. The method of giving a command during the program was used. In the example of FIG. 11,
When the M code command of M900 is executed by the first series of NC machining programs, the execution of the NC machining program is interrupted.
Then, when the same M900 code command is executed in the second series of NC machining programs, the execution of the first series of NC machining programs is resumed, and the first and second series of NC machining programs are simultaneously executed again. You. The same applies to the M code command of M901.

[Problems to be Solved by the Invention] However, in this method, as shown in FIG. 12, for example, when controlling the axis of the first stream from the second stream, it is necessary to put the first stream in a waiting state. , M code commands must be successively issued during the NC machining program, and a dowel command or the like for waiting for the first system to wait on the second system is required. Further, when a complicated axis is entered from three or more systems to another system, it cannot be realized unless a very complicated code command is issued.

It is an object of the present invention that the wait-side system controlled by another system needs to issue one specific code, and the entry-side system that performs axis control of another system also issues a simple specific code. It is to provide a good multi-sequence control NC device.

[Means for Solving the Problems] A multi-series control NC apparatus of the present invention interrupts execution of a first series of NC machining programs and a first series of NC machining programs, and executes a predetermined program during the interruption. A specific code counter which is commonly referred to and updated from the first and second sequences is provided in correspondence with each of the specific codes specified in the one or more second series of NC machining programs. When the specific code of the own system is executed, the program execution unit of the first system refers to a value of a specific code counter which is increased or decreased by a predetermined rule during execution of the specific code.
If the value of the specific code counter indicates that the specific code of the second series has already been executed, the program execution unit of the second series is notified to restart the execution of the NC machining program. If the value of the specific code counter indicates that the execution of the own series of NC machining program is interrupted and the specific code of the second series has not been executed yet,
A queuing processing program for interrupting the execution of the own series of NC machining programs is provided. When a specific code of the own series is executed, the second series of program execution units executes the specific code for the first time.
If the value of the specific code counter indicates that the specific code of the first system has not been executed yet, the execution of the NC machining program of the own system is interrupted, and the execution of the specific code becomes 1
At the second time, if the value of the specific code counter indicates that the specific code of the first sequence has already been executed,
The execution of the NC machining program is continued, and the value of the specific code counter indicates that the number of the second series is one, the execution of the specific code is the second time, and the specific code of the first series is already executed. Indicates that the execution of the NC machining program is restarted to the program execution unit of the first series, the number of the second series is two or more, the execution of the specific code is the nth time, and the own series is executed. Is the last n among the two or more second series
If the value of the specific code counter indicates that the specific code of the first series has already been executed, the execution of the NC machining program is performed by the program execution unit of the first series. A queuing processing program for notifying the user to restart is provided.

[Operation] The specific code is commanded in the NC machining program, and the waiting for the axis controlled by another system is released by executing the specific code of another system multiple times, so that the axis controlled waiting side Since the series only needs to be instructed by one specific code, the programming of the NC machining program becomes easy, and the entry side system realizes the axis entry control by simply issuing a simple specific code.

The present invention can be applied not only to the control of the access of the axis but also to the case where the synchronization between the execution sequences of the NC machining program is taken.

Example Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a multi-sequence control NC apparatus showing one embodiment of the present invention, FIG. 2 is a block diagram showing an example of axis entry control, and FIG. 3 and FIG. performing a flow diagram of the queuing process Furoguramu 9 ₁ and 9 ₂ in the case of performing axial fly control the sequence, Figure 5, Figure 6, the FIG. 7 is an axial fly control from the first series and the third series respectively to the second series FIG. 8 is a flowchart of a waiting process program 9 ₁ , 9 ₂ , 9 _{3 in} the case; FIG. 8 is a diagram showing an example of programming of NC machining programs 8 ₁ and 8 _{2 in} the case of performing the shaft entry control from the second system to the first system; FIG. 9 shows the NC machining programs 8 ₁ , 8 in the case where the shaft entry control is performed from the first system and the third system to the second system.
_2, 8 ₃ illustrates an example of programming, FIG. 10 is a timing diagram of the case where the shaft fly control from the first sequence and the third sequence to the second sequence.

The NC apparatus of the present embodiment is a three-series control NC apparatus and performs control of each of two axes of each series X axis and Z axis. As shown in FIG. Non-volatile memory 1 in which three series of NC machining programs 8 ₁ , 8 ₂ , 8 ₃ are stored
And the NC machining program from the non-volatile memory 1 respectively
8 ₁ , 8 ₂ , 8 ₃ Read and analyze program analysis unit 2 ₁ , 2 ₂ , 2 ₃
And a program execution unit 3 ₁ , 3 ₂ , 3 ₃ that includes a waiting process program 9 ₁ , 9 ₂ , 9 ₃ for performing the axis entry control, and executes the broken NC machining program, and an interpolation processing unit. 4 ₁ , 4 ₂ , 4 ₃ , axis entry processing unit 5, X-axis motor 7x
X-axis servo control units 6x ₁ and 6 for controlling ₁ , 7x ₂ and 7x ₃ respectively
and x _2, 6x _3, and a Z-axis motor 7z _1, 7z _2, Z-axis Sapo controller 6z ₁ for controlling 7z ₃ respectively, 6z _2, 6z _3.

Each series each reads the NC device program 8 _{1-8 3} when activated nonvolatile memory 1, the program analyzing unit 2 ₁ -
It was analyzed by 2 ₃ performs complemented by interpolation processor ₄₁ to _3, giving a moving command to the servo control unit 6x ₁ ~6x ₃ for each axis. Usually the first
7x ₁ and 7z ₁ axis for the series, 7x ₂ and 7z ₂ axes for the second series, 7x for the third series
_3, and performs a control of 7z ₃ axes.

In the present embodiment has served processor 5 for drive over the axis control to another sequence, the use of this, as shown in FIG. 2, [Delta] x ₂ was generated by the interpolation processing section 4 ₂ of the second series, Delta] z
₂ of the [Delta] x ₂ of pulse command may be assigned to 7x ₁ axis, it is possible to control the axis of the first sequence from the second sequence. At this time, in the first stream, since the axis of the own stream is used from another stream, the operation cannot be performed and it is necessary to be in a waiting state. Therefore, in this embodiment, as shown in FIG. 8, the command is specific code M999 while NC machining program _81, the specific code 998 is commanded in the NC machining program _82, the program execution unit 3 ₁ , 3 Figure 3 to _2, respectively, fourth
Is waiting processing program 9 _1, 9 ₂ performs processing shown in the flowchart of FIG contained.

The program execution part 31 is a specific M in the NC machining program 81.
When the code M999 is executed, the wait processing program 91
Execute As shown in FIG. 3, the queuing processing program 91 decrements the M998 counter for the specific M code M998 by 1 (step 11) and checks whether the M998 counter is 0 (step 12). "
The first sequence program execution unit 31 is instructed to notify the second sequence program execution unit 32 of "wait release" (step 13). If the M998 counter is not 0, nothing is performed. +2 to the M999 counter (step 14)
Execution of the NC machining program 81 is interrupted until a notification of "wait release" is received from the second-series program execution unit 32 (step 15).

That is, when the specific code (M999) of the own system is executed in the first system, the value of the specific code counter is referred to and updated (M998 counter-1 → M998 counter, M999 counter + 2).
→ M999 counter (steps 11 and 14)) If the specific code counter (M998 counter) indicates that the specific code (M998) has already been executed in the second stream (if the M998 counter is 0, it is already executed) ), And notifies the second-system program execution unit 32 to restart the execution of the NC machining program (instructs the first-system program execution unit 31 to notify "wait release" (step 13). )), The execution of the own series (first series) NC machining program is interrupted (step 15), and the value of the specific code counter indicates that the second series specific code (M998) has not been executed yet. If the M998 counter is not 0, the execution of the self-series (first-series) NC processing program is interrupted (step 15).

When executing the specific code M998 in the NC machining program 82, the program execution unit 32 executes the waiting processing program 92. As shown in FIG. 4, the queuing processing program 92 decrements the M999 counter (initial value is 0) for the specific code M999 by 1 (step 21), checks whether the M999 counter is 0 (step 22), and determines whether the M999 counter is 0 (step 21). If 0,
The first series of program execution units that are "waiting for release"
The second-series program execution unit 32 is instructed to notify “wait release” to 31 (step 23), and the M999 counter is set to 0.
If not, do nothing and check the second flag indicating whether the execution of the specific code M998 is the second time (step 24).
The second time flag is off, that is, execution of specific code M998 is 1
If it is the first time, the M998 counter (initial value is 0) for the specific code M998 is incremented by 1 (step 25), and it is checked whether or not the M998 counter is 0 (step 26). If it is 0, the second flag is turned on (step 28), and the process is performed. If the flag is not 0, the execution of the NC machining program 82 is interrupted until the notification of "waiting release" is received from the program execution unit 31 of the first series (step 27). If 2
The second flag is turned on (step 29), and the process ends.

That is, when the second sequence specific code (M998) is executed, the specific code is executed for the first time (step 242).
If the value of the specific code counter indicates that the first series specific code (M999) has not been executed yet (step 25 to 27, M998 counter + 1 → M9).
If the 98 counter and the M998 counter are not 0, the execution is not executed), the execution of the own series (second series) NC machining program is interrupted (step 27), and the execution of the specific code is performed for the first time and the first
If the value of the specific code counter indicates that the specific code (M999) of the series has already been executed (steps 25 to 2)
7, M998 counter + 1 → M998 counter, if M998 counter is 0, the execution has already been performed), the execution of the own series of NC machining program is read out, the number of the second series is one, and the specific code (M9
If the value of the specific code counter indicates that the specific code (M999) of the first system has already been executed (steps 11 and 12, M999 counter-1 → M999)
If the M999 counter is 0 in the counter, M998 has already been executed by the second execution of M998), and the program execution unit of the first system is notified to restart the execution of the NC machining program (step 23). ).

Here, the specific code counters (M998 counter, M999 counter) correspond to the specific codes (M998, M99
The counter that increases or decreases by executing 9) is used for waiting control.

The M998 counter is used to determine which of M998 and M999 was executed earlier in time. For example, NC in Fig. 8
When the machining program is executed, the first M9 in the second series
When the 98 command is executed, the M998 counter is incremented by 1 and becomes 1. Next, when M999 is executed in the first sequence, the M998 counter is decremented by 1 to 0. When it becomes 0, it is determined that M998 has already been executed once in the second stream, and the waiting for the second stream is canceled. If the M999 command of the first series is executed first, the M998 counter is decremented to -1 by execution of M999, and the M998 counter is incremented to 0 by execution of M998 of the second series. In this case, the second series is executed. Does not wait for release from the first series.

The M999 counter is used when executing M999 and releasing the waiting of the waiting series. When M999 is executed, the M999 counter is incremented by 2, and when M998 is executed, M999
The counter is decremented by one. When M998 is executed twice, the M999 counter becomes 0. At that time, the waiting of the first series which is waiting to be released by executing M999 is released.

As described above, the specific code counter is increased or decreased when the NC program for performing the waiting process is executed. In addition, for one specific code counter, the number is increased or decreased from both the first stream and the second stream.

This specific code counter can also be adapted to three-series queuing control by changing the increment / decrement value of the counter.

Since the values of the M998 counter and the M999 counter are referred to and updated between the first and second streams, they are stored in a data area (not shown) common to these streams and operated by a reset operation of the NC unit. The initialization is performed by a reset processing unit (not shown).

Here, the specific code M999 and M998, as shown in FIG. 8, is commanded to 8 _1, 8 in ₂ NC machining program, respectively, illustrating the operation when the second line is performed axis fly control to the first series I do.

When a particular code M998 of NC machining program 8 ₂ at time t ₁ is executed by the program execution unit 3 _2, waiting processing program 9 ₂ is executed. That, M999 counter becomes -1 is -1 from 0, also since the second flag is OFF, M998 counter 0 +1 has been become 1, the program execution unit 3 ₂ executes the NC machining program ₈₂ Is interrupted, and "waiting for release" from the first stream is set. When a particular code M999 of NC machining program 8 in ₁ at time t ₂ is executed by the program execution unit 3 _1, queuing process program 9 ₁ is executed. That, M998 counter 1 -1 has been 0 to become the first sequence of program execution unit 3 to notify the "wait release" in which the program execution unit 3 of the _second series to "release wait" ₁ instructs, M999 counter becomes 1 is +2 to -1, the program execution unit 3 ₁ NC machining program ₈₁
Is interrupted and "waiting for release" from the second system is reached.
Thus, the shaft served processor 5 outputs a pulse instruction [Delta] x ₂ output from the interpolation processing section 4 ₂ of the second sequence to the X-axis servo control unit 6x ₁ of the first series, the second series to the first-line Is performed. At time t _3, the specific code M998 of NC machining program 8 in ₂ when executed again by the program execution unit 3 _2, waiting processing program 9 ₂ is executed again. In other words, the M999 counter is decremented from 1 to 0 to become 0, and the second system program execution unit 3 is notified so as to notify the _{first system} program execution unit 31 "waiting for cancellation" of "wait release". ₂ and the second flag is on, so the second flag is turned off. Thus, the control of entering the axis from the second stream to the first stream is completed.

Thus, the NC machining program 8 in ₁ of the first sequence to command a specific code M999, NC machining program ₈₂ of the second series
By commanding a specific code M998 2 times during the execution interruption NC machining program ₈₁ of the first series is released.

Further, even when the fly of the shaft from the first sequence to the second sequence, Figure 4 of the queuing process program to the program execution unit 3 of the _second series, the program execution unit of the first series 3 ₁
Figure 3 put queuing processing programs, possible by a specific code M999 NC program 8 ₂ of the second series to command a specific code M998 commanding twice NC program 8 in ₁ of the first sequence to the is there. The above is an example of two sequences, but the same control can be performed between three sequences by extending this.

Next, in order to perform the control of entering the axis from two streams to one stream, that is, to control the 7x2 axis of the _second stream by the first stream and the 7z2 axis of the _second stream by the third stream, specific code M698, M699, M700, as shown in FIG. 9, is commanded in the NC machining program _81, 82, 8 ₃ respectively, the program execution unit 3 _1, 3 _2, 3 respectively FIG. 5 to ₃ , A queuing processing program for performing the processing shown in the flowcharts of FIGS.
An example in which 9 ₁ , 9 ₂ , and 9 ₃ are included will be described.

The program execution unit 3 ₁ when executing the specific code M698 of 8 in ₁ NC machining program and executes the queuing process program 9 _1. Queuing processing program 9 _1, as shown in FIG. 5, M699 counter for a specific code M699 (initial value is 0) -1 Mr. (step 31), examines whether the M699 counter 0 (step 32), M699 counter If is 0,
The second series of program execution units that are "waiting for release"
3 ₂ "wait release" instructs the program execution unit 3 of the _first series so as to notify (step 33), what is also not if M699 counter is not zero, then execution of the specific code M698 is 2
Check the second flag indicating whether it is the first time (step 3
4) If the second flag is off, that is, if the execution of the specific code M698 is the first time, the M698 counter (initial value is 0) for the specific code M698 is incremented by 1 (step 35), and it is checked whether the M698 counter is 0 (step 36). ), check the 0 if the second flag (step 38), the processing is terminated, NC machining program ₈₁ if not zero from the program execution unit 3 of the _second series until a notice of "wait release" Is interrupted (step 37), and if the second flag is on in step 34, the second flag is turned off (step 39) and the process is terminated.

The program execution unit 3 ₂ when executing the specific code M699 in NC machining program ₈₂ and executes the queuing process program 9 _2. Queuing processing program 9 _2, as shown in FIG. 6, the 1, M698 counter for a specific code M698, M700 (initial value 0) of the third series, -1 said the M700 counter (step 41 and 44), M698 , M700 counter it is checked whether or not 0 (step 42,45), M698 counter, the first 1 M700 counter is set to 0, the "release wait", the third program execution unit 3 ₁ of the series, 3 ₃ in the "wait release "instructs the program execution unit 3 of the _second series to notify (step 43,4
6), M689 counter, nothing if M700 counter is not 0, then the M699 counter +4 Mr (Step 47), the first, the third series of program execution unit 3 ₁ or 3 ₂ of "wait release" It suspends execution of the NC machining program ₈₂ until notification arrives (step 48).

The program execution unit 3 ₃ Running the specific code M700 in NC machining program 8 ₃ executes the queuing process program 9 _3. Queuing processing program 9 _3, as shown in FIG. 7, made from step 51 to 59 are the same as those obtained by replacing the M698 counter queuing process program 9 ₁ (Figure 5) in the M700 counter.

The M698 counter, the M699 counter, and the M700 counter are referred to and updated between a plurality of streams (between the first to third streams) like the M998 counter and the M999 counter.
系列 are stored in a data area (not shown) common to the third series, and are initialized by a reset processing unit (not shown) that operates by a reset operation of the NC device.

Next, during a particular code M698, M699, M700 are NC machining program 8 respectively _1, 8 _2, 8 _3, are commanded as shown in FIG. 9,
The operation in the case where the control for entering the axis from the first system and the third system to the second system will be described with reference to the timing chart of FIG.

When a particular code M698 of NC machining program 8 in ₁ at time t ₁ is executed by the program execution unit 3 _1, queuing process program 9 ₁ is executed. That, M699 counter becomes -1 is -1 from 0, the second flag M698 counter 0 +1 has been become 1 because it is off, the program execution unit 3 ₁ interrupts the execution of the NC machining program ₈₁ From the second system to "waiting for release". NC machining program in time t ₃
When 8 ₃ in particular code M700 is executed by the program execution unit 3 _3, queuing process program 9 ₃ is executed. That is, the M699 counter is decremented by -1 from -1 to -2,
Since the second flag is off, the M700 counter is set to 0 and +1
Has been become 1, the program execution unit 3 ₃ is "release wait" from the second line to interrupt the execution of the NC machining program 8 _3. When a particular code M699 of NC machining program 8 ₂ at time t ₃ is executed by the program execution unit 3 _2, waiting processing program 9 ₂ is executed. That is, M698 counter and M7
00 counter becomes 0 is -1 1, the program execution unit 3 of the _second series ₁ first and third series of program execution unit 3 that is a "release wait" 3 ₃ "wait release notify ", M699 counter is" release wait "from +4 to the program execution unit becomes 2 3 ₂ the first series or third series interrupts the execution of the NC machining program ₈₂ -2. As a result, the axis entry processing unit 5 converts the pulse commands Δx ₁ , Δx ₃ output from the first and third series of interpolation processing units 4 ₁ , 4 ₃ into the second series of X-axis servo control units 6x ₂ , Z outputs to the axis servo controller 6z _2, axis fly control is performed from the first sequence and the third sequence to the second sequence. When a particular code M700 of NC machining program 8 ₃ at time t ₄ is executed by the program execution unit 3 _3, queuing process program 9 ₃ is executed.
That is, the M699 counter is decremented from 2 to 1 to 1,
Since the second flag is on, the second flag is turned off. Specific code of NC machining program 8 in ₁ at time t ₅ M6
98 when executed by the program execution unit 3 _1, queuing process program 9 ₁ is executed. In other words, notifies the "wait release" from 1 M699 counter -1 has been 0, the program execution unit 3 of the _first series in which the program execution unit 3 of the _second series to "release wait" Since the second flag is on, it is turned off. Thereby, the first series and the third series
The axis entry control from the series to the second series ends.

Thus, the NC machining program 8 ₂ of the second series 1
One of the specific code M699 commands, first, by commanding a specific code M698, M700 2 times in NC machining program _81, 82 ₃ of the third series, the execution of the NC machining program ₈₂ of the second series The suspension is released.

Although the above embodiment is for the case of one-line and two-line shaft entry control, the case of three-line or more axis entry control can be easily performed by a similar queuing processing program. Also, although the M code was used as the specific code,
A G code may be used. The waiting release of the system that is axis-controlled by another system may be executed three or more times by a specific code of another system.

[Effects of the Invention] As described above, the present invention instructs a specific code in an NC machining program, and waits for a series controlled by another system by a plurality of executions of another specific code of another system. By canceling, the axis on the waiting side to be controlled by the axis needs only one specific code command, so the NC machining program can be easily programmed. The axis on the entry side that performs axis control requires only a simple specific code command. There is an effect that can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram of a multi-sequence control NC apparatus showing one embodiment of the present invention, FIG. 2 is a block diagram showing an example of axis entry control, and FIG. 3 and FIG. A queuing processing program when entering axis control into the series 9 ₁
When 9 ₂ of the flowchart, Figure 5, Figure 6, Figure 7 is first respectively
Series, queuing process program 9 ₁ when drive over the third series-axis control to the second series, 9 _2, 9 ₃ flow diagram of FIG. 8 is NC when drive over the axis control from the second series to the first-line
Machining program 8 ₁ and 8 shows _two programming examples, FIG. 9 is the first sequence, NC machining program ₈₁ in the case of drive over the third series-axis control to the second series, 8 _2, 8 ₃ programming examples FIG. 10 is a timing chart when the axis control is shifted from the first stream and the third stream to the second stream, and FIG. 11 is a timing chart when a normal waiting is performed between the first stream and the second stream. FIG. 12 is a diagram showing a programming example of a conventional NC machining program, and FIG. 12 is a diagram showing a programming example of a conventional NC machining program in a case of waiting when entering axis control. 1 Non-volatile memory, 2 ₁ , 2 ₂ , 2 ₃ … Program analysis unit, 3 ₁ , 3 ₂ , 3 ₃ … Program execution unit, 4 ₁ , 4 ₂ , 4 ₃ … Interpolation processing unit, 5 ...... axis fly processing _{unit, 6x 1, 6x 2, 6x} 3 ...... X -axis servo control _{unit, 6z 1, 6z 2, 6z} 3 ...... Z -axis servo control _{unit, 7x 1, 7x 2, 7x} 3 ...... X axis motor, 7z _1, 7z _2, 7z ₃ ...... Z-axis motor, 8 _1, 8 _2, 8 ₃ ...... NC machining program, 9 _1, 9 _2, 9 ₃ ...... queuing program, 11～15,21 ~ 29,31 ~ 39,41 ~ 48,51 ~ 59 ... step.

Claims (1)

(57) [Claims] 1. A multi-sequence control NC apparatus capable of simultaneously executing a plurality of series of NC machining programs, wherein the execution of the first series of NC machining programs and the execution of the first series of NC machining programs are interrupted, and a predetermined In response to each of the specific codes specified in the one or more second series of NC machining programs that execute the first program, the first and second series commonly refer to and update a specific code. A code counter is provided, and when the specific code of the own system is executed, the program execution unit of the first system refers to the value of the specific code counter which is increased or decreased by a predetermined rule during execution of the specific code. When the value of the specific code counter indicates that the specific code of the second sequence has already been executed, the program execution unit of the second sequence restarts the execution of the NC machining program. If the value of the specific code counter indicates that the second series of specific codes has not been executed, the execution of the own series of NC machining programs is interrupted. A queuing processing program to be interrupted is provided, and when the specific code of the own system is executed, the program execution unit of the second system executes the specific code for the first time and the specific code of the first system is not yet executed. If the value of the specific code counter indicates that it has not been executed, the execution of the own series of NC machining program is interrupted, and the execution of the specific code is performed for the first time, and the specific code of the first series is already executed. If the value of the specific code counter indicates that
The execution of the machining program is continued, and the number of the second
If the value of the specific code counter indicates that the execution of the specific code is the second time and the specific code of the first series has already been executed, the program execution unit of the first series is executed.
Notify to resume execution of NC machining program,
The number of the series is two or more, the execution of the specific code is the n-th time, and the own series is the last one among the two or more second series.
If the value of the specific code counter indicates that the specific code of the first series has already been executed, the execution of the NC machining program is performed by the program execution unit of the first series. A multi-sequence control NC device comprising a queuing processing program for notifying a restart.